JVC UX-P55 Service Manual page 38

4.14 UPD780055GC-045 (IC931) : Micon
• Pin layout
60
61
80
1
• Pin function
Pin No. Symbol
1 SAFETY0
2 REST/OP_SW/CL_SW
3 SCD
4 AVSS
5 NC
6 NC
7 AVREF1
8 SUBQ/RDDA
9 NC
10 SQCK
11 STAT
12 MDATA
13 MCLK
14 RST
15 MLD
16 MUTE
17 SDATA/VOLDA
18 SCK/VOLCK
19 FLAG
20 CLOSE
21 OPEN
22 FCD
23 NC
24 NC
25 VOLCE
26 NC
27 LINEMUTE
28 PBMUTE
29 SMUTE
30 SPKMUTE
31 AHB
32 POUT
33 VSS
34 PROTECTOR
35 MODEL1
36 MODEL2
1-38 (No.22036)
~ 41
40
21
~ 20
I/O
I Irregular voltage detection 0
I REST/CLOSE switch detect port
I CD safety voltage detect port
- GND
- Not use
- Not use
- Reference voltage
I Q-code data input port
- Not use
O Q-code serial clock
I Status input port
O Data input port
O Data clock
O Reset
O Command ready signal
O Mute control port
O Serial data / Volume data
O Serial clock / Volume clock
- Not use
I Door close switch input port
I Door open switch input port
O CD Function ('H'=CD)
- Not use
- Not use
O Volumn Chip Enable
- Not use
O Line mute
O Playback mute
O System mute
O Speaker mute
O AHB control
O Power On/Off ('H'=Power On)
- GND
O Protector
I MODEL setting
I MODEL setting
Function